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. 2015 May 5;5:9842. doi: 10.1038/srep09842

Figure 1. Controlling the emission and morphology of PE aggregates by molecular design.

Figure 1

(a) Chemical structure of amphiphilic PE1 and PE2 and lipophilic PE3 molecules used in this study. Emission spectra (λex = 340 nm) of (b) PE1 and (c) PE2 in THF and THF-water mixture (1:9 v/v), c = 1 × 10−5 M. Inset of Fig. 1b shows photographs of PE1 in THF (left) and THF-water mixture 1:9 v/v (right) under illumination at 365 nm. (d) Emission spectra (λex = 340 nm) of PE3 (c = 1 × 10−4 M) in chloroform and n-decane. Inset shows photographs of PE3 in chloroform (left) and n-decane (right) under illumination at 365 nm. (e) Emission spectra (λex = 340 nm) of PE1 coated paper in the absence (blue) and presence of (cyan) water. TEM images of (f) PE1 and (g) PE2 aggregates prepared from THF-water mixture (1:9 v/v), c = 5 × 10−5 M displaying spherical particles and (h) PE3 aggregates in n-decane (c = 5 × 10−5 M) showing 1-D fibre bundles.